“This entire project was an exercise in teamwork,” said Kimber Goodwin, creator of the Facebook Event page for the contest. “From our custodians providing a separate bin for milk carton collection in the lunchroom, to our principal and teachers promoting the project, to the students who volunteered to rinse cartons during their recess, and those who gathered after school to create it.”

The grand prize is $5,000, with a $2,500 prize for the “people’s choice” award. Students also wrote an essay along with the submission regarding lessons in sustainability. For more information, please check out https://www.facebook.com/events/1358668100928462/